Head markings indented at 120.0 degrees
A nut, flat on top and bottom having 6 flat sides. For items which have internal tapered or straight (parallel) pipe threads, specific electrical conduit size designation, and which when installed, provide a method of tightening to lock the connection, see locknut, electrical conduit. See also locknut, tube fitting. For items having a thickness (or height) exceeding two times the width across the flats, use post, electrical-mechanical equipment. (when height or thickness and/or width across the flats is designated as a tolerance dimension, the maximum dimension will be used to determine compliance.)
Classification: Nuts of iron or steel
NSN 5999-01-624-3191
NSN 5905-01-381-5664
NSN 5996-00-498-0305
NSN 6610-00-238-1693
NSN 6130-01-573-7665
NSN 6150-01-028-4280
NSN 5895-01-116-4632
NSN 5975-01-196-7100
NSN 6220-01-365-5606
NSN 6685-01-313-4499
NSN 6135-01-646-3039
NSN 5996-00-294-7045